((Don't have any images as of right now, you you'll just have to use your imagination...))

Umbra, Lucius's sole Zanpakuto, has been with him for a while. His knowledge of how to actually use her correctly though has only come recently from Akarui's teaching.

Shikai: The command for Shikai is Shift. Umbra changes into a black and deep purple blade with a similar hilt, and has the ability to change into any style of blade imaginable to Lucius and Umbra. This does affect size, but does not affect mass.